ESI

ESI is a solar energy solutions provider headquartered in Jonestown (Lebanon County), Pennsylvania. With nearly one hundred years of combined expertise among its team members, ESI specializes primarily in large-scale solar photovoltaic (electric) arrays serving clients across the northeastern United States. The company offers comprehensive support throughout the project lifecycle—including assessment of client needs, advisory services on optimal solutions, installation of PV systems, and post-installation verification to ensure performance standards are met.
Their operational footprint extends through project offices across the Mid-Atlantic and New England regions. ESI has established a reputation for delivering robust commercial-scale solar projects tailored to institutional and business customers seeking reliable renewable electricity generation. Founded in 2008 according to industry directories, ESI leverages deep technical knowledge alongside regional experience to address complex site requirements typical of large installations.